<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title></title>
  <style>
    .demo{
      margin: 0 auto 50px;
      width: 800px;
      height: 600px;
    }
  </style>
</head>
<body>
  <div class="pie demo"></div>
  <div class="bar demo"></div>
  <script src="vendor/echarts.min.js"></script>
  <script src="index.js"></script>
</body>
</html>